Connecting a thermal printer to a BBC microbit
Connecting the micro:bit to a thermal till-roll printer to create a Little Box of Poems, which will print a random poem if you press button A, and a really bad Christmas cracker joke if you press button B.

Alexa Weather On micro:bit
Creating an Amazon Alexa skill where the current weather can be asked and the result displayed on the micro:bit.

Updates

v2.1 of Bitty Data Logger Released
With improved usability when a large number micro:bits are present, like in a classroom environment. Allows device filtering, nicknames, favorites, and more.